Lock for valves.



W. F. DREW.

LOOK FOR VALVES.

APPLICATION FILED DBG.13,1913.

1, 1 1 5,792. r Patented Nov. 3, 1914.

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LOOK FOR VALVES.

APPLICATION FILED D150. 13, 1913.

Patented Nov. 3, 1914.

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WARREN F. DREW, OF NEW AZOBK, N. Y., ASSIGNOR TO HARRIS HAIVIIVIOND, OF

NEW YORK, N. Y.

LOCK FOR VALVES.

To all whom it may concern Be it known that I, WARREN F. DREW, a citizen of the United States, residing at 17 East Fifty-ninth street, care of Lester Voronda, New York city, in the county of New York and State of New York, have invented certain new and useful Improvements in Looks for Valves, of which the following is a specification.

This invention relates to looks for valves and the like, and its novelty consists in the construction and adaptation of the parts, as will be more fully hereinafter pointed out.

\Vhere valves of comparatively large size are employed in exposed situations, such as in pipe lines for oil and'water systems, two diliiculties are met with in their use. One is the opening of the valve by unauthorized persons animated by mischievous or other motives, and the other is the difficulty of opening such a valve by an authorized person where the pressures are great or other conditions render it diflicult. I have'sought to overcome both of these difliculties by providing a simple and eflicient means for opening and closing the valve and locking'it in either position.

In the drawings in which there isillustrated a device embodying the invention, Figure 1 is a top plan view of the device; Fig. 2 is a transverse vertical section on the plane of the line 2-2 inFig. 1; Fig. 3 is a side elevation, and Fig. 4 is a detail showing a protecting plate for the gears.

In the drawings, 10 represents a casing of a valve and 20 a plug or body adapted to be rotated therein. Any usual form of valve in which a plug provided with apertures is adapted to be revolved within a casing provided with apertures with which the plug apertures may register is adaptable for use with my invention, and the precise form, size, shape and material of these cooperative parts are immaterial so far as my present invention is concerned.

The casing is provided at any convenient place with a bracket 11 secured to, or made integral therewith, and having two laterally extending apertured members 12 and 13, between which is a collar 14 provided with two holes opposite each other and adapted to receive a pin indicated at 15. At its upper edge the casing is recessed to receive a packing ring 16, and at its lower end it is in turned at 17 and provided with an annular Specification of Letters Patent.

Application filed December 13, 1913.

Patented Nov. 3, 1914.

Serial No. 806,409.

flange 18 externally threaded to receive a cap 19 of any usual suitable form.

The casing is provided with the usual annular flanges 100,having plane external angular surfaces and threaded internally to receive the conduits 101, 102, the passageway thrpugh which the valve is adapted. to contro The plugQO is adapted to fit snugly within the casing 10. At its lower end it'is restricted to form a neck 21 fitting within the inturncd end 17 of the casing and is pro vided with a washer 22 between it and such end. It is further. restricted at 23 and threaded externally to receive a tightening nut 2twhereby it may be adjusted within the cas ng. At its upper end it isexpanded to form a cylindrical head 25 which is recessed at a proper place to receive the packingring 1.6, and the periphery of the. head is provided with gear teeth 26 projecting beyondthe casing and forming a large cylindrical gear. Above the'head 25-and secured to, or made integral therewith, is a lug 27 having two central bores 28 and 29 at right angles to each other. v

Adapted to pass through the collar 1& is a stub shaft 30 expanded at 31 to form a head adapted to overlap or rest upon the head 25 of the plug and the upper end of which is re stricted to form a lug 32 having a central bore 33. The head 31 overlapping the head 25 prevents the withdrawal of the plug from the casing. The pin 15 serves to secure the shaft to the collar 14. Secured on the shaft by a feather 35, or other suitable means, is a pinion 36 adapted to mesh with the gear 26 and to rotate it.

A relatively long lever 10 is adapted to slidably engage the pinion lug 32 and to pass through the aperture therein. It is provided at one end with an annular flange or projection 41 of greater diameter than this aperture to stop its movement in one direction and with a transverse pin 42 to stop its movement in the opposite direction. The aperture or bore 28 in the gear lug 27 is made large enough to permit of the passage of the pin 42. A hole 43 is made in the end of the lever 40 which projects beyond the lug 27 when the lever is in the position shown in Fig. 3, and through this hole is passed a hasp 45 of a padlock 46.

The flange 31 is adapted to shield the teeth of the pinion from injury. The gear is similarly protected by a flange 47 overlapping its teeth 26 (see Fig. 4) and either made integral with the body 25 of the gear or secured thereto in any suitable manner, for instance, by screws, indicated at 28.

. The operation of the device is as follows: When the parts are in the position shown in Fig. 2 the rotation of the lever 40 by hand will turn the pinion lug 32 and the pinion 36, and the latter being in mesh with the gear 25, the gear and the plug to which it is secured or with which it is made integral, is radially rotated no matter how large it may be and how difficult it might be to effect such a rotation by hand. As will be readily understood the lever 40 is long enough to afford a very effectual leverage upon the pinion lug. If the lever 40 is slid into the position shown in Figs. 1, 4c and3, it is quite obvious that the la 32 cannot be rotated and that the plug 0% the valve will remain fixed in whatever position it may be at the time that the lever is put through'another one of the bores in the lug 27. The padlock 46 affords a method of locking the lever intothat inoperative position as will be seen in Fig. 3. Obviously, if the hasp of the padlock is put through the aperture 43 in the lever 40 when this aperture is anywhere between the lug 32 and the lug 27, or if the hasp of the padlock is put through the bore 28 or the bore 29 or" the lug 27 the lever 40 can be operated to rotate the pinion and consequently the gear and the valve plug and its operation cannot be prevented. In other words, the padlock affords a means in connection with the aperture 43 and bores 28 and 29 of locking the device either in an operative or an inoperative position. The pin 42 which can freely pass through the bores 28 or 29 in the plug 27 but cannot pass through the corresponding bore in the lug 32, is provided for the purpose of preventing the removal of the lever from engagement with the lug 32 and its consequent liability to loss.

Vhat I claim is:

1. The combination with a valve comprising a plug and easing, of means for rotating the plug with respect to the casing, including a gear secured to the plug and a pinion adapted to mesh with such gear and carried by the casing and means for rotating the pinion, which means is alsoadapted to engage a part of the plug to lock it in either open or closed position and consists of a lever adapted to be manually operated and y to slidably engag the pinion.

2. The combination with a valve comprising a plug and casing, of means for rotating the plug with respect to the casing, including a gear secured to the plug and a pinion adapted to mesh with such gear and carried by the casing and means for rotating the pinion, which means is also adapted to engage a part of the plug to lockit in either open or closed position and consists of. a

lever adapted to be manually operated and" respect to the casing and which pinionjighi i adapted to mesh with the ear, an aperturd lug adapted to rotate wit the pinion and means for rotating it including a vise-handle lever adapted to slidably engage the lug through its aperture and which lever is also adapted to engage a portion of the gear to prevent its rotation in either open or closed position.

4:. In a device of the character described, a valve casing provided with a bracket, a shaft adapted to be supported thereb and carrying a pinion, aplug adapted to hero tated Within the casing, a gear adapted to rotate the same and to be moved by the pinion, in combination with means for rotating the pinion and which means is also adapted to prevent the rotation of the pinion.

and gear including an apertured In on the" pinion, a second apertured lug on t e. ear, and a lever adapted to slidably engage 0th lugs and which, when it engages the pinion lug, may be used as a handle to turn it and when it engages the gear lug may be used-asa stop to lock it in either open or closed position.

5. In a device of the character described, a valve casing a plug adapted to rotate therein, a gear secured to the plug, a pinion mounted on the casing and adapted to mesh with the gear, and a removable shaft secured to the pinion provided With'an enlargedl head, said head adapted to entirely cover the pinion and a portion of the plug in combination with a device for moving the pinion including a lug on the shaft pro vided with a central bore and a rod adapted to fit therein, and a device for preventing the movement of both the pinion and the gear, includin a lug on the gear provided with central fibres adapted to receive the rod, and means for locking the latter in either a position to permit or prevent fluid flow through the plug consisting of' a hole in the rod, and a padlock, the hasp of which is adapted to pass through the hole.

In testimony whereof I afiix my signature in presence of two witnesses.

I WARREN F. DREW.

Witnesses:

MARY H. LEWIs, HELEN V. F ITZPATRICK. 

